package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.xiaoymin.knife4j.core.util.CollectionUtils;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import javax.jws.WebService;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
	@Autowired
	private OrderMapper orderMapper;
	@Autowired
	private OrderDetailMapper orderDetailMapper;
	@Autowired
	private AddressBookMapper  addressBookMapper;
	@Autowired
	private ShoppingCartMapper  shoppingCartMapper;
	@Autowired
	private WeChatPayUtil weChatPayUtil;
	@Autowired
	private UserMapper userMapper;
	@Autowired
	private WebSocketServer webSocketServer;
	/**
	 * 用户下单
	 * @param ordersSubmitDTO
	 * @return
	 */
	@Override
	public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
		//处理各种业务异常（地址薄为空，购物车数据为空）
		AddressBook  addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
		if (addressBook == null) {
			//抛出业务异常
			throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
		}
		//查询当前用户的购物车数据
		Long userId = BaseContext.getCurrentId();
		ShoppingCart shoppingCart =new ShoppingCart();
		shoppingCart.setUserId(userId);
		List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
		if(shoppingCartList==null||shoppingCartList.size()==0){
			throw new AddressBookBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
		}
		//1、向订单表插入1条数据
		Orders orders=new Orders();
		BeanUtils.copyProperties(ordersSubmitDTO,orders);
		orders.setOrderTime(LocalDateTime.now());
		orders.setPayStatus(Orders.UN_PAID);
		orders.setStatus(Orders.PENDING_PAYMENT);
		orders.setNumber(String.valueOf(System.currentTimeMillis()));
		orders.setPhone(addressBook.getPhone());
		orders.setConsignee(addressBook.getConsignee());
		orders.setUserId(userId);
		orderMapper.insert(orders);
		List<OrderDetail> orderDetailList = new ArrayList<>();
		//2、向订单明细表插入n条数据
		for (ShoppingCart cart : shoppingCartList) {
			OrderDetail orderDetail = new OrderDetail();
			BeanUtils.copyProperties(cart,orderDetail);
			 orderDetail.setOrderId(orders.getId());
			 orderDetailList.add(orderDetail);
		}
		orderDetailMapper.insertBatch(orderDetailList);
		//3、清理购物车数据
		shoppingCartMapper.deleteByUserId(userId);
		//封装vo返回结果
		// 修改后的submitOrder方法最后部分
		OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
				.id(orders.getId())
				.orderTime(orders.getOrderTime())
				.orderNumber(orders.getNumber())
				.orderAmount(orders.getAmount())
				.build();
		
		return orderSubmitVO;
		
	}
	/**
	 * 订单支付
	 *
	 * @param ordersPaymentDTO
	 * @return
	 */
	public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
		// 当前登录用户id
		Long userId = BaseContext.getCurrentId();
		User user = userMapper.getById(userId);
		
		//调用微信支付接口，生成预支付交易单
		JSONObject jsonObject = weChatPayUtil.pay(
				ordersPaymentDTO.getOrderNumber(), //商户订单号
				new BigDecimal(0.01), //支付金额，单位 元
				"苍穹外卖订单", //商品描述
				user.getOpenid() //微信用户的openid
		);
		
		if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
			throw new OrderBusinessException("该订单已支付");
		}
		
		OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
		vo.setPackageStr(jsonObject.getString("package"));
		
		return vo;
	}
	
	/**
	 * 支付成功，修改订单状态
	 *
	 * @param outTradeNo
	 */
	public void paySuccess(String outTradeNo) {
		
		// 根据订单号查询订单
		Orders ordersDB = orderMapper.getByNumber(outTradeNo);
		
		// 根据订单id更新订单的状态、支付方式、支付状态、结账时间
		Orders orders = Orders.builder()
				.id(ordersDB.getId())
				.status(Orders.TO_BE_CONFIRMED)
				.payStatus(Orders.PAID)
				.checkoutTime(LocalDateTime.now())
				.build();
		
		orderMapper.update(orders);
		// 通过WebSocket向客户端推送订单状态
		Map map = new HashMap();
		map.put("type", 1);
		map.put("orderId", ordersDB.getId());
		map.put("content", "订单号"+outTradeNo);
		String json = JSON.toJSONString(map);
		webSocketServer.sendToAllClient(json);
	}
	/**
	 * 用户端订单分页查询
	 *
	 * @param pageNum
	 * @param pageSize
	 * @param status
	 * @return
	 */
	public PageResult pageQuery4User(int pageNum, int pageSize, Integer status) {
		// 设置分页
		PageHelper.startPage(pageNum, pageSize);
		
		OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
		ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
		ordersPageQueryDTO.setStatus(status);
		
		// 分页条件查询
		Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);
		
		List<OrderVO> list = new ArrayList();
		
		// 查询出订单明细，并封装入OrderVO进行响应
		if (page != null && page.getTotal() > 0) {
			for (Orders orders : page) {
				Long orderId = orders.getId();// 订单id
				
				// 查询订单明细
				List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);
				
				OrderVO orderVO = new OrderVO();
				BeanUtils.copyProperties(orders, orderVO);
				orderVO.setOrderDetailList(orderDetails);
				
				list.add(orderVO);
			}
		}
		return new PageResult(page.getTotal(), list);
	}
	/**
	 * 查询订单详情
	 *
	 * @param id
	 * @return
	 */
	public OrderVO details(Long id) {
		// 根据id查询订单
		Orders orders = orderMapper.getById(id);
		
		// 查询该订单对应的菜品/套餐明细
		List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
		
		// 将该订单及其详情封装到OrderVO并返回
		OrderVO orderVO = new OrderVO();
		BeanUtils.copyProperties(orders, orderVO);
		orderVO.setOrderDetailList(orderDetailList);
		
		return orderVO;
	}
	/**
	 * 用户取消订单
	 *
	 * @param id
	 */
	public void userCancelById(Long id) throws Exception {
		// 根据id查询订单
		Orders ordersDB = orderMapper.getById(id);
		
		// 校验订单是否存在
		if (ordersDB == null) {
			throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
		}
		
		//订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
		if (ordersDB.getStatus() > 2) {
			throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
		}
		
		Orders orders = new Orders();
		orders.setId(ordersDB.getId());
		
		// 订单处于待接单状态下取消，需要进行退款
		if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
			//调用微信支付退款接口
			weChatPayUtil.refund(
					ordersDB.getNumber(), //商户订单号
					ordersDB.getNumber(), //商户退款单号
					new BigDecimal(0.01),//退款金额，单位 元
					new BigDecimal(0.01));//原订单金额
			
			//支付状态修改为 退款
			orders.setPayStatus(Orders.REFUND);
		}
		
		// 更新订单状态、取消原因、取消时间
		orders.setStatus(Orders.CANCELLED);
		orders.setCancelReason("用户取消");
		orders.setCancelTime(LocalDateTime.now());
		orderMapper.update(orders);
	}
	/**
	 * 再来一单
	 *
	 * @param id
	 */
	public void repetition(Long id) {
		// 查询当前用户id
		Long userId = BaseContext.getCurrentId();
		
		// 根据订单id查询当前订单详情
		List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
		
		// 将订单详情对象转换为购物车对象
		List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(x -> {
			ShoppingCart shoppingCart = new ShoppingCart();
			
			// 将原订单详情里面的菜品信息重新复制到购物车对象中
			BeanUtils.copyProperties(x, shoppingCart, "id");
			shoppingCart.setUserId(userId);
			shoppingCart.setCreateTime(LocalDateTime.now());
			
			return shoppingCart;
		}).collect(Collectors.toList());
		
		// 将购物车对象批量添加到数据库
		shoppingCartMapper.insertBatch(shoppingCartList);
	}
	/**
	 * 订单搜索
	 *
	 * @param ordersPageQueryDTO
	 * @return
	 */
	public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
		PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
		
		Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);
		
		// 部分订单状态，需要额外返回订单菜品信息，将Orders转化为OrderVO
		List<OrderVO> orderVOList = getOrderVOList(page);
		
		return new PageResult(page.getTotal(), orderVOList);
	}
	
	private List<OrderVO> getOrderVOList(Page<Orders> page) {
		// 需要返回订单菜品信息，自定义OrderVO响应结果
		List<OrderVO> orderVOList = new ArrayList<>();
		
		List<Orders> ordersList = page.getResult();
		if (!CollectionUtils.isEmpty(ordersList)) {
			for (Orders orders : ordersList) {
				// 将共同字段复制到OrderVO
				OrderVO orderVO = new OrderVO();
				BeanUtils.copyProperties(orders, orderVO);
				String orderDishes = getOrderDishesStr(orders);
				
				// 将订单菜品信息封装到orderVO中，并添加到orderVOList
				orderVO.setOrderDishes(orderDishes);
				orderVOList.add(orderVO);
			}
		}
		return orderVOList;
	}
	
	/**
	 * 根据订单id获取菜品信息字符串
	 *
	 * @param orders
	 * @return
	 */
	private String getOrderDishesStr(Orders orders) {
		// 查询订单菜品详情信息（订单中的菜品和数量）
		List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
		
		// 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
		List<String> orderDishList = orderDetailList.stream().map(x -> {
			String orderDish = x.getName() + "*" + x.getNumber() + ";";
			return orderDish;
		}).collect(Collectors.toList());
		
		// 将该订单对应的所有菜品信息拼接在一起
		return String.join("", orderDishList);
	}
	/**
	 * 各个状态的订单数量统计
	 *
	 * @return
	 */
	public OrderStatisticsVO statistics() {
		// 根据状态，分别查询出待接单、待派送、派送中的订单数量
		Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
		Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
		Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);
		
		// 将查询出的数据封装到orderStatisticsVO中响应
		OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
		orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
		orderStatisticsVO.setConfirmed(confirmed);
		orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
		return orderStatisticsVO;
	}
	/**
	 * 接单
	 *
	 * @param ordersConfirmDTO
	 */
	public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
		Orders orders = Orders.builder()
				.id(ordersConfirmDTO.getId())
				.status(Orders.CONFIRMED)
				.build();
		
		orderMapper.update(orders);
	}
	/**
	 * 拒单
	 *
	 * @param ordersRejectionDTO
	 */
	public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
		// 根据id查询订单
		Orders ordersDB = orderMapper.getById(ordersRejectionDTO.getId());
		
		// 订单只有存在且状态为2（待接单）才可以拒单
		if (ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
			throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
		}
		
		//支付状态
		Integer payStatus = ordersDB.getPayStatus();
		if (payStatus == Orders.PAID) {
			//用户已支付，需要退款
			String refund = weChatPayUtil.refund(
					ordersDB.getNumber(),
					ordersDB.getNumber(),
					new BigDecimal(0.01),
					new BigDecimal(0.01));
			log.info("申请退款：{}", refund);
		}
		
		// 拒单需要退款，根据订单id更新订单状态、拒单原因、取消时间
		Orders orders = new Orders();
		orders.setId(ordersDB.getId());
		orders.setStatus(Orders.CANCELLED);
		orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
		orders.setCancelTime(LocalDateTime.now());
		
		orderMapper.update(orders);
	}
	/**
	 * 取消订单
	 *
	 * @param ordersCancelDTO
	 */
	public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
		// 根据id查询订单
		Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());
		
		//支付状态
		Integer payStatus = ordersDB.getPayStatus();
		if (payStatus == 1) {
			//用户已支付，需要退款
			String refund = weChatPayUtil.refund(
					ordersDB.getNumber(),
					ordersDB.getNumber(),
					new BigDecimal(0.01),
					new BigDecimal(0.01));
			log.info("申请退款：{}", refund);
		}
		
		// 管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
		Orders orders = new Orders();
		orders.setId(ordersCancelDTO.getId());
		orders.setStatus(Orders.CANCELLED);
		orders.setCancelReason(ordersCancelDTO.getCancelReason());
		orders.setCancelTime(LocalDateTime.now());
		orderMapper.update(orders);
	}
	/**
	 * 派送订单
	 *
	 * @param id
	 */
	public void delivery(Long id) {
		// 根据id查询订单
		Orders ordersDB = orderMapper.getById(id);
		
		// 校验订单是否存在，并且状态为3
		if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)) {
			throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
		}
		
		Orders orders = new Orders();
		orders.setId(ordersDB.getId());
		// 更新订单状态,状态转为派送中
		orders.setStatus(Orders.DELIVERY_IN_PROGRESS);
		
		orderMapper.update(orders);
	}
	/**
	 * 完成订单
	 *
	 * @param id
	 */
	public void complete(Long id) {
		// 根据id查询订单
		Orders ordersDB = orderMapper.getById(id);
		
		// 校验订单是否存在，并且状态为4
		if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
			throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
		}
		
		Orders orders = new Orders();
		orders.setId(ordersDB.getId());
		// 更新订单状态,状态转为完成
		orders.setStatus(Orders.COMPLETED);
		orders.setDeliveryTime(LocalDateTime.now());
		
		orderMapper.update(orders);
	}
	
	
	
	@Value("${sky.shop.address}")
	private String shopAddress;
	
	@Value("${sky.baidu.ak}")
	private String ak;
	/**
	 * 检查客户的收货地址是否超出配送范围
	 * @param address
	 */
	private void checkOutOfRange(String address) {
		Map map = new HashMap();
		map.put("address",shopAddress);
		map.put("output","json");
		map.put("ak",ak);
		
		//获取店铺的经纬度坐标
		String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);
		
		JSONObject jsonObject = JSON.parseObject(shopCoordinate);
		if(!jsonObject.getString("status").equals("0")){
			throw new OrderBusinessException("店铺地址解析失败");
		}
		
		//数据解析
		JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
		String lat = location.getString("lat");
		String lng = location.getString("lng");
		//店铺经纬度坐标
		String shopLngLat = lat + "," + lng;
		
		map.put("address",address);
		//获取用户收货地址的经纬度坐标
		String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);
		
		jsonObject = JSON.parseObject(userCoordinate);
		if(!jsonObject.getString("status").equals("0")){
			throw new OrderBusinessException("收货地址解析失败");
		}
		
		//数据解析
		location = jsonObject.getJSONObject("result").getJSONObject("location");
		lat = location.getString("lat");
		lng = location.getString("lng");
		//用户收货地址经纬度坐标
		String userLngLat = lat + "," + lng;
		
		map.put("origin",shopLngLat);
		map.put("destination",userLngLat);
		map.put("steps_info","0");
		
		//路线规划
		String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);
		
		jsonObject = JSON.parseObject(json);
		if(!jsonObject.getString("status").equals("0")){
			throw new OrderBusinessException("配送路线规划失败");
		}
		
		//数据解析
		JSONObject result = jsonObject.getJSONObject("result");
		JSONArray jsonArray = (JSONArray) result.get("routes");
		Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");
		
		if(distance > 5000){
			//配送距离超过5000米
			throw new OrderBusinessException("超出配送范围");
		}
	}
	/**
	 * 客户催单
	 * @param id
	 */
	@Override
	public void reminder(Long id) {
		//根据id查询订单是否存在，订单状态为4（派送中）
		Orders ordersDB = orderMapper.getById(id);
		//校验订单是否存在，订单状态是否为4（派送中）
		if(ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)){
			throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
		}
		Map map = new HashMap();
		map.put("type",2);
		map.put("orderId",id);
		map.put("content","订单号:"+ordersDB.getNumber());
		//通过WebSocketServer类发送消息给客户端
		WebSocketServer.sendToAllClient(JSON.toJSONString( map));
	
	}
}
